Benchmark: string.includes vs string.indexOf vs regex.test(string) vs == vs ===

Script Preparation code:

var string = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'

Tests:

indexOf
string.indexOf('ullamco')
includes
string.includes('ullamco')
regex
/ullamco/.test(string)
Equal
string == 'ullamco'
Strict Equal
string === 'ullamco'

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
indexOf
includes
regex
Equal
Strict Equal

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 9 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
indexOf	36877290.0 Ops/sec
includes	37243220.0 Ops/sec
regex	10791070.0 Ops/sec
Equal	36998400.0 Ops/sec
Strict Equal	36684610.0 Ops/sec

string.includes vs string.indexOf vs regex.test(string) vs == vs === (version: 0)

Comparing performance of: indexOf vs includes vs regex vs Equal vs Strict Equal

Created: one year ago by: Guest

Jump to the latest result

indexOf

includes

regex

Equal

Strict Equal

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A